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A |     Search for China’s wild elephants, and you’ll find headlines like these: “Elephants are running out of habitat” and “Human-elephant conflict.”    Reuters once noted that while China’s wild elephant population was recovering, their available habitat had come under increasing pressure, potentially increasing the risk of human-elephant conflict.    The report also raised a broader question: How Xishuangbanna protects its elephants and ecosystems may help shape China’s broader relationship with nature.    So, what do the facts show?    August 12 is World Elephant Day, while August 15 marks China’s National Ecology Day and the day China’s Ecological and Environmental Code officially takes effect.    In 2021, a herd of wild Asian elephants in Yunnan traveled more than 1,400 kilometers over 124 days, drawing worldwide attention.    Today, China’s wild Asian elephant population has grown to nearly 400. From nature reserves and dedicated feeding grounds to early-warning systems and a strengthening legal framework, China is exploring a new balance between people and elephants.    Masood Khalid, former Pakistani ambassador to China, said China has achieved “all-round development” through people-centric policies. He noted that China could share its expertise, knowledge and technology with developing countries, particularly under the Belt and Road Initiative and the Global Development Initiative, “so that they are better equipped to preserve wildlife.”    K.D. Parakum Shantha, mayor of Dehiwala-Mount Lavinia, Sri Lanka, also highlighted Xishuangbanna’s approach to development. He said Xishuangbanna protects the elephants in the rainforest while the city has developed within the rainforest without destroying the local ecology, calling it “a very great thing.”    The Asian elephant story offers a window into China’s broader system of environmental governance. As China’s new energy vehicle, photovoltaic and wind power industries continue to grow, its ecological practices are contributing more experience and momentum to the global green transition. (Huang Fang, Intern: Zou Hanjun)                        。    A team of scientists has discovered a likely explanation for why one may feel exhausted after engaging in intense cognitive work.,In their study, published in the Current Biology last week, the researchers argue that intense cognitive work, when it lasts for several hours, results in the buildup of potentially toxic byproducts in the prefrontal cortex part of the human brain, which then affects a person’s behavior.,“Influential theories suggested that fatigue is a sort of illusion cooked up by the brain to make us stop whatever we are doing and turn to a more gratifying activity,” Mathias Pessiglione of Pitié-Salpêtrière University in Paris, said as quoted in a news release by Cell Press. “But our findings show that cognitive work results in a true functional alteration—accumulation of noxious substances—so fatigue would indeed be a signal that makes us stop working but for a different purpose: to preserve the integrity of brain functioning.”,During the course of their research, the team employed magnetic resonance spectroscopy to monitor the brain chemistry of two groups of people during a workday, with one group performing easy cognitive tasks while the other engaged in more complex mental activities.,Only the latter group ended up exhibiting signs of fatigue, as well as a tendency to favor “options proposing rewards at short delay with little effort,” as the news release put it.,AmericasChild Survives After 7 Minutes Without Blood Flow to Brain During Surgery, US Cardiologist Reveals11 August, 16:41 GMT,Furthermore, members of that group had higher levels of glutamate in the synapses of the prefrontal cortex, leading the researchers to suggest that the accumulation of glutamate “makes further activation of the prefrontal cortex more costly,” and thus a mentally exhaustive workday makes cognitive control more difficult.,Unfortunately, there seems to be no fancy way to deal with this problem other than the tried and tested method that is probably as old as history itself.,“I would employ good old recipes: rest and sleep!” Pessiglione remarked. “There is good evidence that glutamate is eliminated from synapses during sleep.”。